1 All his private mail exchanges will be archived.
2 Third parties listening on the wire (security breach or PR scandal.)
3 Potential PR disclosure scandal by someone who had a conversation with him (Lewinsky, anyone?)
He can diminish the amount of personal talks to deal with problem 1 (e.g. something he'd say to his wife.) Having encrypted client server conversation doesn't completely fix 2, doing PGP-style encryption mostly would do (there is still the issue of PDA security, usually it's not good.) But that would make problem 3 even worse as the valid 3rd party can now show the message(s) cryptographically signed by Obama.
This last bit can be addressed with Off-the-Record cryptography as it offers plausible deniability. http://www.cypherpunks.ca/otr/ But the third parties should have to have a compatible client (that could be a nice filter for randoms :)
Anyway, the NSA can sure give him a PDA-based system better than Blackberry + Exchange, with all that and maybe more.
Comments
From TA, Obama faces three problems.
He can diminish the amount of personal talks to deal with problem 1 (e.g. something he'd say to his wife.) Having encrypted client server conversation doesn't completely fix 2, doing PGP-style encryption mostly would do (there is still the issue of PDA security, usually it's not good.) But that would make problem 3 even worse as the valid 3rd party can now show the message(s) cryptographically signed by Obama.This last bit can be addressed with Off-the-Record cryptography as it offers plausible deniability. http://www.cypherpunks.ca/otr/ But the third parties should have to have a compatible client (that could be a nice filter for randoms :)
Anyway, the NSA can sure give him a PDA-based system better than Blackberry + Exchange, with all that and maybe more.